Hypodermic syringe.



W B. PARSONS.

HYPODERMIG SYRINGE. ,APPIvLIoATIoN FILED JULY 23, 1910.

Patented June 27, 1911.

W BUCHANNAN PARSONS, OF IVIISSOULA, MONTANA.

HYPODERIVIIC SYRINGE.

Speciication of Letters Patent. Patented June 27,. 1911.V

Application led July 23, 1910. Serial No. 573,554.

To all whom it may concern.'

Be it known that I, W BUGHANNAN PAR- soNs, citizen of the United States,residing at Missoula, in the county of Missoula and State of Montana,have invented certain new and useful Improvements in HypodermicSyringes, of which the following is a speciiication, reference being hadtherein to the accompanying drawing.

This invention relates to syringes and has special reference tohypodermic syringes.

The invention has for its object to provide a simple, inexpensivesyringe which may be readily taken apart and put to-gether, and whichwhen not in use will have the nozzle or needle thereof inclosed withinthe main body of the syringe and thereby pro-- tect it.

The invention consists in a syringe as hereinafter set forth andclaimed.

Referring to the accompanying drawings, Figure l is a view of a syringeconstructed in accordance with this invention. Fig. 2 is a longitudinalsection thereof. Fig. 3 is a view showing the bulb in longitudinalsection and the needle inclosed within the bulb. Fig. 4 is an enlargeddetail view of the needle in longitudinal section. Fig. 5 is an enlargeddetail view in perspective of the end of the needle.

This invention applies to an ordinary bulb syringe with a nozzle as wellas to a bulb syringe having a hypodermic needle. For the sake ofillustrating the invention a hypodermic needle is shown in connectionwith the bulb.

In the construction of this invention a simple compressible bulb 1 isprovided having a contracted neck with a thickened portion or collar 2.

8 indicates a hypodermic needle which is formed with an enlarged,elongated base portion 4 having two enlarged portions 4 with a narrowneck 5 between said portions 4. The base portion 4 is formed with alongitudinal passage way 6 which is considerably larger than the passageway of the needle so as to supply a quantity of the medicinal fluid inthe bulb to the needle. While any suitable form of hypodermic needle maybe employed, the needle here shown is preferably provided with anenlarged inclined curved head 7 serving as the point of the needle. Itwill be seen that by means of this construction the needle may bereadily inserted in the neck of the bulb which has been pressed over aportion of the base 4, firmly clasping the neck 5 of the Vbase 4,forming a tight joint therewith and serving to hold the needle firmly inplace in the neck of the bulb.

The syringe constructed as hereinbefore set forth may be readily used,the needle being detached from the bulb and the bulb filled with asuitable medicinal fluid or with water and a tablet mashed to powdercontained in the water. The needle is then secured in the neck of thebulb as shown in Figs. l and 2 and the syringe is ready for use.

In order to protect the needle when not in use and to keep it in propersanitary condition the needle is pushed into the bulb and the neck ofthe bulb brought over the neck 5 of the base of the needle therebyfirmly holding the needle in place as it is located within the bulb asshown in Fig. 3.

It will be seen that by means of this invention a very simple,economical syringe is provided which is compact and which cannot get outof order, and in which the needle is properly protected when not in use.

Having described the invention I claim A hypodermic syringe comprisingan elastic bulb having its mouth formed with a contracted neck and ahypodermic needle provided with an elongated base formed of a pair ofovate bodies alined in the direction of their lengths and connectedtogether by a narrow neck adapted to lit closely within the neck of thebulb, each of said ovate bodies being adapted to be pushed through theneck of the bulb so as to have the latter closely grip the narrow neckbetween said ovate bodies whereby the needle may be held in position toproject outward from the mouth of the bulb or into the bulb from itsneck.

In testimony whereof I hereunto aflix my signature in presence of twowitnesses.

W BUCHANNAN PARSONS.

L. H. KEELER.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

